US3069758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction composition and method of making
Assignee: SK Wellman Corp
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Filing: 1962-01-12
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Granted: 1962-12-25
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Wulff John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:26
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A FRICTION MEMBER COMPRISING A REINFORCING METAL BACKING MEMBER AND SINTERED AND BONDED THERETO A COMPACTED FRICTION FACING, SAID FACING COMPRISING A MAJOR PROPORTION OF IRON, A MINOR PROPORTION OF A NON-METALLIC FRICTION AFFECTING MATERIAL, AND 0.2% TO 1.5% BY WEIGHT OF THE FACING A METAL CARBONATE ENERGIZER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |